1997 Chevrolet Astro Owner's Manual - Page 129
1997 Chevrolet Astro Manual
Page 129 highlights
Erasing Channels To erase all three programmed channels, hold down the two outside buttonsuntil the red light begins to flash. Individual channels cannotbe erased, but can be reprogrammed using the procedure forprogramming the transmitter explainedearlier. 2. Remove the cover panel from the garage door opener receiver. It is located nearthe garage door opener motor. 3. Locate the training button on the garage door opener receiver. The exact location and color will vary among brands. 4. Press the training button on the garage door opener receiver for one to two seconds. Training a Garage Opener with a "Rolling Code" Feature If you programmed the universal transmitter, but the garage door will not open, and if your garage door opener was manufactured after 1995, your garage door may have a security feature that changesthe "code" of your garage door opener every time it is opened or closed. To determine if your garage door opener has this "rolling code" feature, press the appropriate button on the universal transmitter that was programmed. If the red light flashes rapidly for one to two seconds, then turns solid, your garage dooropener has this feature. To program a garage dooropener with the rolling code feature, do the following: 1. Program your hand-held transmitter to the universal transmitter by following the steps provided under "Programming the Transmitter" earlier in this section. 5 . Return to your vehicle and press the programmed button on the universal transmitter until the red light flashes rapidly (about two seconds). 6. Release the button, then press it again to confirm it was programmed to the garage door opener receiver. You may now use either the universal transmitter or the hand-held transmitter to open your garage door. If you still have difficulty in programming and require assistance, please call 1-800-355-35 15. Accessories Accessories for the universal transmitter areavailable from the manufacturer of the unit. If you would like additional information, please call 1-800-355-35 15. 2-55